CN102951073A - Method and device for controlling a light emission from a headlamp of a vehicle - Google Patents
Method and device for controlling a light emission from a headlamp of a vehicle Download PDFInfo
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- CN102951073A CN102951073A CN2012103007978A CN201210300797A CN102951073A CN 102951073 A CN102951073 A CN 102951073A CN 2012103007978 A CN2012103007978 A CN 2012103007978A CN 201210300797 A CN201210300797 A CN 201210300797A CN 102951073 A CN102951073 A CN 102951073A
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- radiation characteristic
- headlight
- debounce
- light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/05—Special features for controlling or switching of the light beam
- B60Q2300/052—Switching delay, i.e. the beam is not switched or changed instantaneously upon occurrence of a condition change
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/05—Special features for controlling or switching of the light beam
- B60Q2300/054—Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/32—Road surface or travel path
- B60Q2300/324—Road inclination, e.g. uphill or downhill
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
A method for controlling a light emission of at least one headlight of a vehicle. The method includes receiving a change enabling signal for performing a change of the light emission of the at least one headlight from an input emission characteristic to an output emission characteristic during a debouncing period and/or debouncing distance which begin(s) in response to the change enabling signal. The method also includes changing the light emission of the at least one headlight from the input emission characteristic to an intermediate emission characteristic in response to the change enabling signal. The method also includes changing the light emission of the at least one headlight from the intermediate emission characteristic to the output emission characteristic after the debouncing period and/or the debouncing distance has/have elapsed.
Description
Technical field
The present invention relates to a kind of photoemissive method and a kind of equipment that is configured to implement the step of this method of the headlight for the control vehicle.
Background technology
Carrying out in the situation of the light guide in the vehicle by means of known distance light auxiliary device, using moving time (Entprellzeit) of debounce or the moving distance of debounce (Entprellstrecke), in order to for example postpone to open distance light (Aufblenden).At this, usually in the distance light auxiliary device, be provided with moving time of certain debounce or the moving distance of debounce, can not make thus (again) the emergent vehicle that for example after bend or top, slope, just disappears dazzling.Generally speaking, in all distance light auxiliary devices debounce moving be essential.At night, when in dazzling relevant traffic environment, having other traffic participants, usually do not use distance light.When no longer having vehicle in the dazzling relevant traffic environment at vehicle front (vehicle that for example travels in opposite directions crosses from the side or disappears after bend at the vehicle that front travels), just can switch to distance light.
Summary of the invention
Under described background, by the present invention's described a kind of photoemissive method, a kind of corresponding equipment and a kind of corresponding computer program of headlight for the control vehicle of main claim of giving chapter and verse.Favourable configuration is drawn by corresponding dependent claims and following description.
The present invention is based on following understanding: for example when the light that changes automobile front lamp is launched, for example in the opening process from the dipped beam to the distance light, can switch radiation characteristic by one or more intergrades by debounce during the moving window of debounce of moving time or the moving distance definition of debounce.Therefore, for example can not occur can be corresponding to the input radiation characteristic (Eingangsabstrahlcharakteristik) of dipped beam to for example can be corresponding to direct, the unexpected switching between the output radiation characteristic (Ausgangsabstrahlcharakteristik) of distance light.Replace, carry out the input radiation characteristic to the change of the classification of output radiation characteristic, perhaps carry out therefrom between the radiation characteristic set out to the rear class of the switching of output radiation characteristic.
The invention has the advantages that, for moving time of debounce or the moving distance of debounce, find favourable the trading off between the visual field and preventative dazzling the avoiding.Distance light be can avoid opening too continually and distance light (Abblenden) and the relevant therewith interference effect to driver comfort and visbility closed.During relating to moving time of the debounce of opening distance light and closing the preventative wait between the distance light or the moving distance of debounce, chaufeur has the visual field of improvement by intergrade, and avoids the potential dazzling of other traffic participants.Can avoid equally when opening distance light and immediately vehicle occurring, closing uncomfortably distance light.Therefore, can during moving time of debounce or the moving distance of debounce, improve the visual field and safety, wherein can make the dazzling probability of vehicle of potential appearance lower.For example so trigger, so that be comfortable for chaufeur.On average, need more not switch fast continually and easily discovered and the unlatching distance light of negative impression and close distance light by chaufeur, especially when closing distance light or reducing the visual field.For example between " distance light is closed in maintenance " and " unlatching distance light ", regulate the intergrade of headlight.Thus, chaufeur obtains the farther visual field.But can not make the traffic of appearance dazzling, because for example so select intergrade, so that terminator reaches at most the headlight height.If for example other traffic participants occur at the moving time durations of remaining debounce, then so also needn't close distance light or only must minimally close distance light, this for example means for chaufeur because the light quantity in the traffic environment changes the interference reduction that causes.
The present invention realizes a kind of photoemissive method of at least one headlight for controlling vehicle, and wherein said method has following steps:
Receive and change enable signal
Be used for during moving time of the debounce that begins in response to described change enable signal and/or the moving distance of debounce, implementing the change of light emission from the input radiation characteristic to the output radiation characteristic of described at least one car light;
In response to described change enable signal the light of described at least one headlight is launched from the input radiation characteristic changing to middle radiation characteristic; And
The radiation characteristic changing is to the output radiation characteristic between launching the light of described at least one headlight therefrom after moving time of debounce and/or the moving distance end of debounce.
Vehicle can be self-propelled vehicle, the self-propelled vehicle relevant with road especially, and for example car, load-carrying vehicle are used for vehicle or other commercial vehicles of personnel's transportation.Described at least one headlight for example can be the head light of vehicle.The light of headlight is transmitted in this and can changes scalably.The light emission of headlight can changed at this aspect the radiation characteristic of headlight.Input radiation characteristic, middle radiation characteristic and output radiation characteristic can represent respectively light emitting anger, light distribution, brightness, light quantity, illumination intensity, illumination distances and/or the similar characteristics of at least one headlight.At this, input radiation characteristic, middle radiation characteristic and output radiation characteristic can be distinguished at least in the one side of the described parameter of headlight different.At this, the analog value of the light emitting anger of middle radiation characteristic, light distribution, brightness, light quantity, illumination intensity, illumination distances and/or similar characteristics is between the analog value of input radiation characteristic and output radiation characteristic.For example, the input radiation characteristic can be corresponding to the less headlight light emitting anger of specific output radiation characteristic or less headlamp illumination distance, and is perhaps opposite.For example, the input radiation characteristic can or can be similar to dipped beam corresponding to dipped beam, and the output radiation characteristic can or can be similar to distance light corresponding to distance light, and is perhaps opposite.The sluggish form of the moving time representation of debounce.At this, the light that the moving time of debounce for example can be understood as headlight is transmitted in the delay time when changing between input radiation characteristic and the output radiation characteristic.Can when receiving the change enable signal, directly begin the moving time of debounce.Can when receiving the change enable signal, directly begin the change of light emission from the input radiation characteristic to middle radiation characteristic equally.Can after the moving time of debounce finishes, directly begin equally light launch therefrom between the radiation characteristic to the change of output radiation characteristic.The time length of moving time of debounce can be predetermined or adjustable regularly.The moving time of alternative debounce can use debounce to move distance.The moving distance of debounce can relate to vehicle the distance of travelling of process.Can try to achieve the moving distance of debounce by the moving time of debounce in the situation that know car speed, vice versa.
In in the step that changes at least one, can little by little change the light emission.This can be continuously or infinitely or ramped shaped ground change the light emission of headlight.At this, radiation characteristic in the middle of the emission of the light of described at least one headlight little by little can being changed to from the input radiation characteristic, additionally or alternatively, the radiation characteristic little by little change to the output radiation characteristic between light that can described at least one headlight be launched therefrom.This change gradually has following advantage: can avoid unexpected saltus step when the change of radiation characteristic, thereby the eyes of chaufeur can be got used to the radiation characteristic of corresponding new adjusting better.Therefore, drive safety improves, because the better potential danger of perception.
According to an embodiment, if having, described change enable signal shows that satisfying at least one is used for changing the photoemissive value that enables condition, at least one in the step that then can implement to change.In the step that therefore can change in response to particular value or the logic level enforcement of described change enable signal at least one.Be used for changing the photoemissive condition that enables if satisfy, then change enable signal and can have particular value or logic level.At this, the condition that enables that is satisfied for example can be defined in and not have other vehicles, vehicle current location beyond the dwelling district of sealing etc. in the dazzling relevant traffic environment.Have another value or another logic level, at least one in the step of not implementing to change if change enable signal.Also can be partly or receive continuously and change enable signal at the moving time durations of debounce.If no longer satisfy the condition that enables and therefore changing enable signal no longer has particular value at the moving time durations of debounce, then can interrupt or cancel at least one in the step of change.This embodiment has following advantage: only just implement photoemissive change when for example making thus dazzling dangerous of other traffic participants when not existing.Therefore can improve traffic safety.
Also can be provided with based on vehicle characteristics and the step of radiation characteristic in the middle of additionally or alternatively determining based on the running data of vehicle.Vehicle characteristics for example relates to setting height(from bottom) and the embodiment of the headlight of vehicle.Running data for example relates to present speed or the yaw speed of vehicle.At this, during moving time of debounce and/or the moving distance of debounce, carry out the step of determining.Especially, carry out the step that one or many is determined at the moving time durations of debounce.At this, usefulness respectively current definite middle radiation characteristic is controlled the light emission.In other words, the light emission extremely can upgraded middle radiation characteristic according to the repeatedly enforcement of the step of determining after the step of middle radiation characteristic from the input radiation characteristic changing.Middle radiation characteristic this determines to provide following advantage: therefore have the middle radiation characteristic that is suitable for the current driving situation.Like this, can further reduce the dazzling of other traffic participants at the moving time durations of debounce.
At this, in the step of determining, additionally determine the centre radiation characteristic based on the information about the gradient (Steigung) of road, vehicle moves at described road.For example can by means of have pick up camera for the measurement procedure of Height Estimation, by means of the navigational aid with height map or by means of measuring, estimate or other devices of the altitude feature of definite vehicle front on travel direction being tried to achieve the gradient of road.Therefore, can receive the information about gradient, and radiation characteristic in the middle of in the step of determining, using, so that radiation characteristic is for example mated with altitude feature in the middle of making.This terrain match provides following advantage: both can improve the visual field and also can improve dazzling avoiding.
In addition, can be provided with the step of trying to achieve for launch the moment of the step from the input radiation characteristic changing to middle radiation characteristic in response to the light that changes described at least one headlight of enable signal enforcement.Can be in the hope of being positioned at the debounce moment of moving time at this.For example can so try to achieve the described moment, so that correspond directly in time the step that the change of light emission from the input radiation characteristic to middle radiation characteristic of at least one headlight implemented in the reception that changes enable signal.This moment tries to achieve provides following advantage: can consider the current traffic conditions of possible other traffic participants of tool in the dazzling relevant traffic environment and can implement the step that changes in the suitable moment.Reduce thus the dazzling danger of other traffic participants.
In addition, can be provided with the step of the comparison of implementing input radiation characteristic and middle radiation characteristic.At this, can be according to the described step of light emission from the input radiation characteristic changing to middle radiation characteristic of relatively implementing described at least one headlight.For example, if input radiation characteristic and middle radiation characteristic have the first ratio, then can implement the step of light emission from the input radiation characteristic changing to middle radiation characteristic with described at least one headlight.For example, if input radiation characteristic and middle radiation characteristic have the second ratio or input radiation characteristic corresponding to middle radiation characteristic, then can skip the enforcement with the step of light emission from the input radiation characteristic changing to middle radiation characteristic of described at least one headlight.This embodiment provides following advantage: can irrespectively regulate all the time suitable middle radiation characteristic with the input radiation characteristic.
In addition, can be provided with radiation characteristic changing between the light emission therefrom of described at least one headlight to the step of at least one other middle radiation characteristic.At this, in the step that changes, after moving time of debounce and/or the moving distance end of debounce, the light emission of described at least one headlight can be changed to the output radiation characteristic from described at least one other middle radiation characteristic.Described at least one other middle radiation characteristic numerically can be between middle radiation characteristic and output radiation characteristic.Therefore, between input radiation characteristic and output radiation characteristic, also can there be a plurality of middle radiation characteristics.Can value the light emission whole change from the input radiation characteristic to the output radiation characteristic or travel through radiation characteristic in the middle of these.Other middle radiation characteristic like this provides following advantage: can further reduce unexpected saltus step or the change of radiation characteristic when the light emission that changes described at least one headlight.
In addition, the present invention has realized a kind of equipment, and it is configured to implement or realize the step of the method according to this invention.Especially, described equipment can have the device of each step that is configured to carry out described method.By the enforcement flexible program of apparatus-form of the present invention also can be fast and effectively solve the present invention based on task.
Equipment is at this electric equipment or control convenience that can be understood as the processes sensor signal and export accordingly control signal.Described equipment can have interface hardware construction and/or software construction.When hardware construction, interface for example can be the part of so-called system ASIC, and it comprises the various function of described equipment.But also possible is that interface is independent integrated circuit or is comprised of discrete parts at least in part.When software construction, interface can be the software module that for example coexists with other software modules on microcontroller.
Computer program with program code also is favourable, described program code can be stored in the machine sensible carrier---on semiconductor memory, harddisk memory or optical memory, and is used for when the method for when equipment is carried out described program, implementing according to one of embodiment described above.
Description of drawings
Exemplarily elaborated with reference to the accompanying drawings the present invention.Accompanying drawing illustrates:
Figure 1A to 2E: the schematic diagram of the different radiation characteristics of automobile front lamp;
Fig. 3: the schematic diagram with vehicle of control convenience according to an embodiment of the invention;
Fig. 4: the diagram of circuit of method according to an embodiment of the invention;
Fig. 5 A to 8D: the diagram of the different radiation characteristics of automobile front lamp according to an embodiment of the invention;
Fig. 9 and 10: the diagram of circuit of algorithm according to an embodiment of the invention.
The specific embodiment
In the following description of the preferred embodiments of the present invention, for shown in the different accompanying drawings and act on similar element and use same or similar Reference numeral, wherein be not repeated in this description these elements.
Figure 1A to 1F illustrates the schematic diagram of the different radiation characteristic 171 of automobile front lamp.Radiation characteristic 171 is expressed as light distribution or active distance or the illumination distances of automobile front lamp at this.Exactly, can be by means of the distance light auxiliary device---AHC(Adaptive High Beam Control for example: the control of self adaptation distance light) regulate different radiation characteristic 171.At this, show radiation characteristic 171 from getting a bird's eye view the visual angle.In Figure 1A to 1F, radiation characteristic 171 is produced by the headlight of (not shown) vehicle respectively, and wherein this vehicle set is on the respective image left hand edge of Figure 1A to 1F.Radiation characteristic 171 has the variation of light distribution or light intensity.In Figure 1B to 1F, also show other vehicles 190.In the process of Figure 1B to 1F, other vehicles 190 are put more and more less with respect to the spacing of the vehicle that produces radiation characteristic 171.At this, radiation characteristic 171 is so mated respectively, so that other vehicles 190 are positioned at beyond the light distribution or active distance of automobile front lamp.Because passing light for example has little illumination distances for the speed that surpasses 80km/h, so developed AHC.AHC can dynamically mate the active distance of headlight, so that at the maximum active distance that headlight do not occur regulating in the dazzling situation of other vehicles 190.Therefore, carry out the coupling of active distance.
Fig. 2 A to 2E illustrates the schematic diagram of the different radiation characteristic of automobile front lamp.Show vehicle 200 and different radiation characteristics 271.In addition, in Fig. 2 B to 2E, show respectively other vehicles 290.Radiation characteristic 271 is expressed as the light vertebra of the headlight of vehicle 200 at this.Can be by means of the distance light auxiliary device---AHC(Adaptive High Beam Control for example: the control of self adaptation distance light) regulate different radiation characteristic 271.At this, lateral plan shows in the radiation characteristic 171.In Fig. 2 B, other vehicles 290 with respect to the distance of vehicle 200 than large in Fig. 2 C.In Fig. 2 D and 2E, the road at vehicle 200 and other vehicle 290 places has gradient or the gradient at least.At this, radiation characteristic 271 is so mated respectively, so that other vehicles 290 are positioned at beyond the light distribution or active distance of automobile front lamp.The adjusting of active distance or radiation characteristic 271 is carried out in the adjusting of the different angle of radiation of the headlight by vehicle 200.
Fig. 3 illustrates the schematic diagram of the vehicle with control convenience according to an embodiment of the invention.Vehicle 300 has enabled device 310, control convenience 320, trigger equipment 360 and two headlights 370, and described control convenience 320 has receiving device 330, the first modifier 340 and the second modifier 350.Enabled device 310 is passed through communication interface with control convenience 320---and for example at least one signal line etc. is connected.Trigger equipment 360 and control convenience 320 are by another communication interface---for example at least one signal line etc. is connected.Therefore, control convenience 320 is connected between enabled device 310 and the trigger equipment 360.Headlight 370 and trigger equipment 360 are by another communication interface---for example at least one signal line etc. is connected.Therefore, trigger equipment 360 is connected between control convenience 320 and the headlight 370.Even in Fig. 3, do not illustrate, also can be the part of trigger equipment 360 but trigger equipment 360 also can be a part or the control convenience 320 of control convenience 320.
Enabled device 310 for example can have vehicle camera, image is processed electronics package, is used for obtaining the vehicle sensors of running data, the sending and receiving devices that is used for position data, other signal processing electronic devices etc., and described image is processed the method that electronics package for example is used for being suitable for image processing, graphical analysis, pattern-recognition, object identification and/or similar functions.Enabled device 310 is configured to produce the change enable signal.The Different Logic value of change enable signal can represent for the permission of the change of light emission from the input radiation characteristic to the output radiation characteristic of implementing headlight 370 or forbid and (in case of necessity) other information.At this, implement the change of light emission from the input radiation characteristic to the output radiation characteristic of headlight 370 at the moving time durations of the debounce that begins in response to described change enable signal.In described embodiment and other embodiment, the additional or moving time of replacement debounce also can be used the moving distance of the debounce that begins in response to described change enable signal.Enabled device 310 is configured to described change enable signal is exported to control convenience 320.
Receiving device 330 is configured to receive described change enable signal from enabled device 310.When the change enable signal had the logical value of the change of light emission from the input radiation characteristic to the output radiation characteristic that represents permission enforcement headlight 370, receiving device 330 can be configured to described change enable signal is exported or is transmitted to the first modifier 340 and additionally or alternatively exports or be transmitted to the second modifier 350.In response to the reception of the change enable signal with logical value that expression allow to implement changes, receiving device 330 can be additionally or alternatively is configured to start time meter or timer, generation and to the first modifier 340 output very first time signals and additionally or alternatively produce and to the second modifier 350 outputs the second time signal.Have the change enable signal that expression allows the logical value of enforcement change along with receiving, the moving time of debounce begins.
The first modifier 340 is configured to receive described change enable signals and (additionally or alternatively) very first time signal from receiving device 330.The first modifier 340 is configured in response to described change enable signal and (additionally or alternatively) very first time signal the light emission of headlight 370 from the input radiation characteristic changing to middle radiation characteristic or cause described change.For this reason, radiation characteristic in the middle of the first modifier 340 or the device of distributing to described the first modifier 340 can be determined alternatively.Can be based on the running data of vehicle characteristics and/or vehicle 300 and additionally carry out describedly determining based on the information of the gradient of the road that moves thereon about vehicle 300 where necessary.The first modifier 340 or the device of distributing to described the first modifier 340 also can be tried to achieve the moment that changes for implementing alternatively, for example in the situation that use very first time signal.The first modifier 340 is configured to radiation characteristic in the middle of described and/or the described moment with the formal output of the first control information to trigger equipment 360 and (alternatively) second modifier 350.
The second modifier 350 is configured to receive described change enable signals and (additionally or alternatively) second time signal and receive the first control information from the first modifier 340 alternatively from receiving device 330.The radiation characteristic changing was to the output radiation characteristic or cause described change between the second modifier 350 was configured to launch the light of headlight 370 therefrom after the moving time of debounce finishes.At this, for example the second time signal of receiving device 330 can show the end of moving time of debounce or can try to achieve the debounce end of moving time based on the second time signal.The second modifier 350 or the device of distributing to described the second modifier 350 also can be tried to achieve the moment that changes for implementing alternatively, for example in the situation that use the second time signal.The second modifier 350 is configured to described output radiation characteristic and/or the described moment with the formal output of the second control information to trigger equipment 360.
Fig. 4 illustrates the diagram of circuit of the photoemissive method for controlling at least one automobile front lamp according to an embodiment of the invention.Described method 400 has the step that receives 410 change enable signals, is used for implementing at the moving time durations of the debounce that begins in response to described change enable signal the change of light emission from the input radiation characteristic to the output radiation characteristic of described at least one car light.Described method 400 also has in response to light emission the step from input radiation characteristic changing 420 to middle radiation characteristic of described change enable signal with described at least one headlight.In addition, described method 400 also have after the moving time of described debounce finishes, launch the light of described at least one headlight therefrom between radiation characteristic changing 430 to the step of output radiation characteristic.Can be with equipment---for example the control convenience among Fig. 3 be advantageously carried out described method 400 in combination.Therefore, the control convenience among Fig. 3 can be configured to implement the step of described method 400.
Fig. 5 A to 5C illustrates the according to an embodiment of the invention schematic diagram of the different radiation characteristics of automobile front lamp.In each of Fig. 5 A to 5C, show the vehicle 300 of the radiation characteristic with headlight 370 and light cone form with lateral plan.Show respectively in addition smooth road.Vehicle 300 can be the vehicle with the control convenience among Fig. 3.In Fig. 5 A, radiation characteristic is input radiation characteristic 373, and additionally shows other vehicles 390.Input radiation characteristic 373 for example can be corresponding to dipped beam.Input radiation characteristic 373 or the light cone that produces based on described input radiation characteristic can have the coboundary, and described coboundary is assembled with road in the zone of other vehicles 390.Other vehicles 390 are Reverse Commutings for vehicle 300.In Fig. 5 B, radiation characteristic is middle radiation characteristic 375, and other vehicles are not shown.Middle radiation characteristic 375 or the light cone that produces based on radiation characteristic in the middle of described can have the coboundary, and described coboundary and road are approximate to be extended abreast.In Fig. 5 C, radiation characteristic is output radiation characteristic 377.Output radiation characteristic 377 is such as can be corresponding to distance light etc.Output radiation characteristic 377 or the light cone that produces based on described output radiation characteristic can have the coboundary, described coboundary deviating road.
Can be in the situation that use to be used for controlling photoemissive method (for example method of Fig. 4) and to draw in the radiation characteristic shown in Fig. 5 A to 5C.In traffic environment, no longer exist after other vehicles 390, after debounce the first time length of moving time, so improve light cone from 373 beginnings of input radiation characteristic, so that it is no more than 0 °, namely with the plane parallel of road ground or in the horizontal direction radiation (referring to Fig. 5 B).The first time length of moving time of debounce also can approach zero, namely can place immediately 0 °, for example travelling in opposite directions-the moving meaning of debounce on.By the radiation of the maximum horizontal of light in middle radiation characteristic 375, other traffic participants 390 are not dazzling ideally when occurring, because the light and shade border reaches at most the height of the headlight of other vehicles 390.The chaufeur of vehicle 300 still has the farther visual field, because obviously more light are on road.Another time length (it can be wait time) in the moving time of debounce afterwards, further improves the light and shade border, and switches to when needed (referring to Fig. 5 C) on the distance light 377.In Fig. 9, can see the principle process for the rudimentary algorithm of the angle of radiation of headlight coupling.
Fig. 6 A to 6C illustrates the according to an embodiment of the invention schematic diagram of the different radiation characteristics of automobile front lamp.Diagram among Fig. 6 A to 6C is corresponding to the diagram among Fig. 5 A to 5C, except road is that part tilts.Exactly, road begins until a point between the vehicle 300 Fig. 6 A and other vehicles 390 is smooth and begins until the image right hand edge tilts from described point from the image left hand edge.In Fig. 6 B, additionally show the setting height(from bottom) h of headlight
s Middle radiation characteristic 375 among Fig. 6 B or the light cone that produces based on radiation characteristic in the middle of described can have the coboundary, and described coboundary is to be substantially equal to headlight setting height(from bottom) h
sSpacing and the sloping portion of road is approximate extends abreast.
Can be in the situation that use to be used for controlling photoemissive method (for example method of Fig. 4) and to draw in the radiation characteristic shown in Fig. 6 A to 6C.If for example use method among Fig. 4 or the control convenience among Fig. 3, measurement or estimate the tilt sensor (for example have pick up camera for the measurement procedure of Height Estimation, have navigational aid of height map etc.) of the altitude feature in vehicle 300 the place aheads, can replace 0 ° angle of radiation regulate in the middle of the angle of radiation that is complementary with altitude feature of radiation characteristic 375.Described angle of radiation allows maximum so large, so that the headlight light cone is no more than headlight setting height(from bottom) h
s(referring to Fig. 6 B).In the uneven situation of road, the coupling on light and shade border does not rely on the use of tilt sensor, and for example only brings up to 0 °, as among Fig. 5 B.
Fig. 7 A to 7C illustrates the according to an embodiment of the invention schematic diagram of the different radiation characteristics of automobile front lamp.Diagram among Fig. 7 A to 7C is corresponding to the diagram among Fig. 5 A to 5C, except exemplarily show two street lamps in Fig. 7 A, so that the zone of expression continuous illumination.
Can be in the situation that use to be used for controlling photoemissive method (for example method of Fig. 4) and to draw in the radiation characteristic shown in Fig. 7 A to 7C.(for example in the city) do not allow regulation output radiation characteristic 377 or connects country beam in the zone of such continuous illumination.After leaving the city, again allow to connect country beam.At this, when not having other vehicles in the traffic environment, the light and shade border can be brought up to equally intergrade or middle radiation characteristic more than 375.Therefore, after leaving continuous road illumination, regulate intergrade or middle radiation characteristic 375.After intergrade or middle radiation characteristic 375, can regulation output radiation characteristic 377.
Fig. 8 A to 8D illustrates the according to an embodiment of the invention figure of the different radiation characteristics of automobile front lamp.In each of these figure, abscissa represents time t, wherein drawn three time values or constantly t1, t2, t3, and ordinate represents headlight angle a, has wherein drawn three headlight angle value a1, a2 and a3.In each of these figure, show the change procedure of headlight angle a about time t.At this, t1 is until the time section of moment t3 represents the moving time of debounce for the photoemissive method (for example method of Fig. 4) of at least one headlight of controlling vehicle constantly.Represent radiation characteristic and can control being used in using Fig. 4 in the situation of photoemissive method to draw at the headlight angle change procedure shown in Fig. 8 A to 8D.
Diagram among Fig. 8 B is corresponding to the diagram among Fig. 8 A, except namely beginning in the moving time of debounce at moment t1() existence has the input headlight angle 873 of value a1, and until moment t2 brings up to the middle headlight angle 875 with value a2 continuously.In the situation with reference to the method among Fig. 4 additionally, in Fig. 8 A, illustrated in image, no longer have other vehicles (t1) or roll away from city (t1) afterwards the headlight angle from initial level 873(t1) be elevated to ramped shaped intergrade 875(t2).Yet direct-cut operation is to dazzling level 877(t3).Namely between moment t1 and moment t2, switch to continuously intergrade 875, arrive dazzling level 877 at moment t3 direct-cut operation subsequently.In the situation of the rising of using such ramped shaped, can (relatively) realize lentamente beginning not at the same level, wherein can ramped shaped change headlight angle, as shown in Fig. 8 B.
Diagram among Fig. 8 C is corresponding to the diagram among Fig. 8 A, except input headlight angle 873 has value a1 consistently between moment t1 and moment t3.At this, value a1 improves with respect to the corresponding value a1 among Fig. 8 A and Fig. 8 B and is being worth between a2 and the value a3.At moment t3, the headlight angle is brought up to output headlight angle 877 from input headlight angle 873.Therefore, in the situation with reference to the method among the figure 4 additionally, in Fig. 8 C, illustrated when with as the maintenance of input headlight angle 873 when the standard feature shown in Fig. 8 A is compared beginning angle or input headlight angle 873 greater than the nominal angle a2 of intergrade.Therefore, when beginning angle a1 is higher than the intergrade a2 of standard, can keep the input headlight angle 873 that improves.For example, when by means of AHC angle of radiation more than moment t1 regulates horizon (0 °) or that be higher than the gradient of being measured by tilt sensor, initial light distributes and remains intergrade, as during typical debounce is moving.Thus, do not reduce the visual field of chaufeur, but because the larger dazzling danger visual field of yet not improving chaufeur, as shown in Fig. 8 C.Figure 10 illustrates based on the diagram of circuit of algorithm.
Diagram among Fig. 8 D has middle headlight angle headlight angles in the middle of this illustrates two now of value a2 corresponding to the diagram among Fig. 8 A except replacement.Headlight angle 874 has value a2 in the middle of first, and a), and headlight angle 876 has value a2, b in the middle of second).It is a1＜a2 that the pass of all angle values among Fig. 8 D ties up to this, a)＜and a2, b)＜a3.At moment t2, headlight angle 875 in the middle of input headlight angle 873 brings up to first.Duration between moment t2 and moment t3, headlight angle 876 in the middle of the first middle headlight angle 874 brings up to second.At moment t3, the second middle headlight angle 876 is brought up to output headlight angle 877.Therefore, Fig. 8 C shows the possible embodiment with a plurality of levels or intergrade, an intergrade wherein not only can be set but also arbitrarily a plurality of intergrade can be set in principle.
Fig. 9 illustrates the diagram of circuit according to the photoemissive method of at least one headlight that is used for the control vehicle of the embodiment of algorithm 900 forms of the present invention.
During beginning, existence 873, described state can be corresponding to the low light and shade border among Fig. 8 A, 8B or the 8D, dipped beam or input headlight angle.In step 910, wait for first timer 912 or wait for the signal " flow(overflow) " of described first timer.In step 915, calculate intergrade.At this, tilt sensor 917 can be provided as the sensing data of the input of step 915, and wherein tilt sensor 917 is optional.The described intergrade of beginning in step 920.Described intergrade can be intergrade or the middle headlight angle among Fig. 8 A, 8B or the 8D, for example is 0 ° angle of radiation.In step 925, wait for second advanced timer 927 or wait for the signal " flow " of described timer.If be provided with a plurality of intergrades, then step 915 and/or step 925 can be optional.The high light and shade border of beginning in step 930, it can be corresponding to the distance light among Fig. 8 A to 8D or output headlight angle.
Therefore, Fig. 9 is illustrated in the diagram of circuit of the algorithm in the situation that does not keep high angle more.Principle expansion scheme with tilt sensor and a plurality of intergrades is possible.
Figure 10 illustrates the diagram of circuit according to the photoemissive method of at least one headlight that is used for the control vehicle of the embodiment of algorithm 1000 forms of the present invention.
Determine in step 910: the time length of moving time of debounce finishes.In step 915, calculate intergrade or be used for the nominal angle of intergrade.Check in step 1015: whether the nominal angle of intergrade is greater than actual angle.If the nominal angle of intergrade then carry out step 920 greater than actual angle, wherein begin the nominal angle of intergrade.The nominal angle of intergrade can corresponding to the middle headlight angle among Fig. 8 A, 8B or the 8D, for example be 0 ° angle of radiation.If the nominal angle of intergrade is not more than actual angle, then carry out step 1020, wherein keep actual angle.Determine in step 925: the second time length of moving time of debounce finishes.Beginning can be corresponding to the high headlight angle of the output headlight angle among Fig. 8 A to 8D, for example distance light in step 930.
Therefore, Figure 10 is illustrated in the diagram of circuit of the algorithm that is used for the maintenance maximum angle when triggering.
Referring to Fig. 3 to 10 draw outlines of embodiments of the invention.
The method 400 that can carry out in conjunction with control convenience 320 be to a certain extent level and smooth illumination distances (GLW) detailed realization, be replace the special hierarchy plan regulated continuously, namely be the particular case that illumination distances is regulated.The control of self adaptation distance light), CHC or ALC(ALC-Adaptive Low Beam Control this can be used for the moving time durations of the preventative dazzling debounce of being avoided for example also in the situation that AHC(AHC-Adaptive High Beam Control:: the control of self adaptation dipped beam) realize that the visual field increases.In an intergrade or at least one intergrade, improve the angle of radiation of headlight 370.At this, can divide for the moving time of the debounce of different levels, as for example shown in Fig. 8 A.
In the time for example will connecting distance light, can regulate distance light distribute before at first with headlight angle ramped shaped be adjusted to maximum angle 877.Thus, more hard place does not switch to distance light, and this is more comfortable for chaufeur.If level and smooth illumination distances (AHC-Adaptive High Beam Control: the control of self adaptation distance light) (wherein can accurate infinitely regulate the light and shade border (HDG) between dipped beam and the distance light), then can make light and shade border and dynamic lighting distance adjustment coupling is not set.(also namely: ALC-Adaptive Low Beam Control: for example be useful for load equalization in the pure distance light auxiliary device control of self adaptation dipped beam) (HBA-High Beam Activation: distance light activates), it is for example installed owing to legal provisions in xenon headlight all the time having integrated dynamic lighting distance adjustment for this.If still do not connect in one embodiment distance light, then can improve the light and shade border, in order to before the moving time of distance light debounce finishes, improve the visual field thus, wherein keep preventative dazzling avoiding.Replace the moving time of debounce, also can use the moving distance of debounce (wherein vehicle before having another radiation characteristic, travelled certain distance) or both combinations.
Described and embodiment illustrated in the accompanying drawings only exemplarily selects.Different embodiment can be fully or in each characteristic aspect combination with one another.An embodiment also can replenish by the feature of another embodiment.In addition, can repeat and come executive basis method step of the present invention with the order that is different from described order.If embodiment comprise between First Characteristic and the Second Characteristic " and/or " be connected, then this is interpreted as: described embodiment not only has First Characteristic according to an embodiment but also has Second Characteristic and according to another embodiment or only have First Characteristic or only have Second Characteristic.
Claims (10)
1. be used for the photoemissive method (400) of at least one headlight (370) of control vehicle (300), wherein, described method (400) has following steps:
Receive (410) and change enable signal, be used for during moving time of the debounce that begins in response to described change enable signal and/or the moving distance of debounce, implementing the light emission of described at least one headlight (370) from input radiation characteristic (373,873) to the change of output radiation characteristic (377,877);
Radiation characteristic (375,875) in the middle of in response to described change enable signal the emission of the light of described at least one headlight (370) being changed to from described input radiation characteristic (373,873); And
Light emission with described at least one headlight (370) after described debounce is moved time and/or the moving distance end of described debounce changes to described output radiation characteristic (377,877) from described middle radiation characteristic (375,875).
2. method according to claim 1 (400) wherein, in the step of described change (420,430) at least one, little by little changes described light emission.
3. according to each described method (400) in the above claim, wherein, show that satisfy at least one is used for changing the described photoemissive value that enables condition if described change enable signal has, then implement in the step of described change (420,430) at least one.
4. according to each described method (400) in the above claim, wherein, described method has based on the vehicle characteristics of described vehicle (300) and/or running data determines (915) described middle radiation characteristic (375,875) step, wherein, during moving time of described debounce and/or the moving distance of described debounce, carry out the described step of determining (915).
5. method according to claim 4 (400) wherein, in the described step of determining (915), is additionally determined described centre radiation characteristic (375,875) based on the information about the gradient of road, and described vehicle moves at described road.
6. according to each described method (400) in the above claim, wherein, described method has to try to achieve for implementing in response to described change enable signal launches the light of described at least one headlight (370) from described input radiation characteristic (373,873) change to described in the middle of the step in the moment of step of radiation characteristic (375,875).
7. according to each described method (400) in the above claim, wherein, described method has the described input radiation characteristic (373 of enforcement (1015), 873) with described middle radiation characteristic (375, the step of comparison 875) wherein, is launched the light of described at least one headlight (370) from described input radiation characteristic (373 according to described relatively enforcement, 873) change (420) to the step of described middle radiation characteristic (375,875).
8. according to each described method (400) in the above claim, wherein, described method has launches the light of described at least one headlight (370) from described middle radiation characteristic (375,875) change at least one other middle radiation characteristic (376,876) step, wherein, in the step of described change (430), after moving time of described debounce and/or the moving distance end of described debounce, the light of described at least one headlight (370) is launched from described at least one other middle radiation characteristic (376,876) change to described output radiation characteristic (377,877).
9. equipment (320), it is configured to implement according to claim 1 the step of each described method (400) in 8.
10. the computer program that has program code, each described method (400) in when equipment (320) is gone up executive routine, implementing according to claim 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011081371A DE102011081371A1 (en) | 2011-08-23 | 2011-08-23 | Method and device for controlling a light emission of a headlamp of a vehicle |
| DE102011081371.3 | 2011-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102951073A true CN102951073A (en) | 2013-03-06 |
| CN102951073B CN102951073B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210300797.8A Active CN102951073B (en) | 2011-08-23 | 2012-08-22 | Method and device for controlling a light emission from a headlamp of a vehicle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8636392B2 (en) |
| EP (1) | EP2562041B1 (en) |
| JP (1) | JP6214139B2 (en) |
| CN (1) | CN102951073B (en) |
| DE (1) | DE102011081371A1 (en) |
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| CN104534380A (en) * | 2013-08-15 | 2015-04-22 | 罗伯特·博世有限公司 | Method and device for controlling at least one headlight of a vehicle |
| CN109476256A (en) * | 2016-07-29 | 2019-03-15 | 戴姆勒股份公司 | Method for the control device of headlamp and for operating headlamp |
| CN109958957A (en) * | 2017-12-22 | 2019-07-02 | 法雷奥照明公司 | Segmented illumination component for motor vehicles |
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| FR3010690B1 (en) * | 2013-08-02 | 2017-12-22 | Valeo Vision | DEVICE FOR FIXING A LIGHTING AND / OR SIGNALING MODULE ON A STRUCTURAL ELEMENT |
| DE102013216903A1 (en) * | 2013-08-26 | 2015-02-26 | Robert Bosch Gmbh | Method and apparatus for determining road quality |
| DE102014218572A1 (en) * | 2014-09-16 | 2016-03-17 | Robert Bosch Gmbh | Method and device for operating a headlight to be emitted by a headlight for a vehicle |
| DE102014225517A1 (en) * | 2014-12-11 | 2016-06-16 | Robert Bosch Gmbh | Method and control unit for adjusting at least one parameter of a driver assistance device of a vehicle |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6214139B2 (en) | 2017-10-18 |
| US8636392B2 (en) | 2014-01-28 |
| JP2013043640A (en) | 2013-03-04 |
| EP2562041B1 (en) | 2020-02-19 |
| CN102951073B (en) | 2017-04-12 |
| EP2562041A2 (en) | 2013-02-27 |
| EP2562041A3 (en) | 2014-05-07 |
| US20130051043A1 (en) | 2013-02-28 |
| DE102011081371A1 (en) | 2013-02-28 |
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